Volume Reflection Dependence of 400 GeV/c Protons on the Bent Crystal Curvature

Journal Article · Fri Dec 05 00:00:00 EST 2008 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.101.234801· OSTI ID:21179964

Scandale, W ^[1]; Vomiero, A ^[2]; Baricordi, S; Dalpiaz, P; Fiorini, M; Guidi, V; Mazzolari, A ^[3]; Milan, R ^[4]; Della Mea, Gianantonio ^[5]; Ambrosi, G; Zuccon, P ^[6]; Bertucci, B; Burger, W J; Duranti, M ^[7]; Cavoto, G; Santacesaria, R; Valente, P ^[8]; Iacoangeli, F; Pisano, S ^[9]; Luci, C ^[9]

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1. CERN, European Organization for Nuclear Research, CH-1211 Geneva 23 (Switzerland)
2. INFM-CNR, Via Vallotti 9, 25133 Brescia (Italy)
3. INFN Sezione di Ferrara, Dipartimento di Fisica, Universita di Ferrara Via Saragat 1, 44100 Ferrara (Italy)
4. INFN Laboratori Nazionali di Legnaro, Viale Universita 2, 35020 Legnaro (PD) (Italy)
5. Dipartimento di Ingegneria dei Materiali e Tecnologie Industriali, Universita di Trento, Via Mesiano 77, 38050 Trento (Italy)
6. INFN Sezione di Perugia, via Pascoli, 06123 Perugia (Italy)
7. Dipartimento di Fisica, Universita degli Studi di Perugia via Pascoli, 06123 Perugia (Italy)
8. INFN Sezione di Roma, Piazzale Aldo Moro 2, 00185 Rome (Italy)
9. Dipartimento di Fisica, Universita di Roma 'La Sapienza' Piazzale A. Moro 2 I-00185 Rome (Italy)

The trend of volume reflection parameters (deflection angle and efficiency) in a bent (110) silicon crystal has been investigated as a function of the crystal curvature with 400 GeV/c protons on the H8 beam line at the CERN Super Proton Synchrotron. This Letter describes the analysis performed at six different curvatures showing that the optimal radius for volume reflection is approximately 10 times greater than the critical radius for channeling. A strong scattering of the beam by the planar potential is also observed for a bend radius close to the critical one.

• OSTI ID: 21179964
• Journal Information: Physical Review Letters, Vol. 101, Issue 23; Other Information: DOI: 10.1103/PhysRevLett.101.234801; (c) 2008 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
CERN SPS SYNCHROTRON
CHANNELING
CRYSTALS
GEV RANGE 100-1000
POTENTIALS
PROTON BEAMS
PROTONS
REFLECTION
SCATTERING
SILICON